ive had acid reflux for years but in the last year or so i have been vomiting up white chunks with stomach acid. i think its stomach acid anyway brown liquid burns like fire when it comes up. i have been taking tums for years but i go through a lot a big bottle every month. they help for a little while 10-15 mins. or so then i have to take more but they are starting to not help at all. WHATS WRONG WITH ME ANYBODY KNOW??